Fixes 100% cpu usage when the exit interrupt never got acked.
Signed-off-by: Maarten Lankhorst m.b.lankhorst@gmail.com --- diff --git a/drivers/gpu/drm/nouveau/core/core/falcon.c b/drivers/gpu/drm/nouveau/core/core/falcon.c index e05c157..b11c5f3 100644 --- a/drivers/gpu/drm/nouveau/core/core/falcon.c +++ b/drivers/gpu/drm/nouveau/core/core/falcon.c @@ -229,6 +229,24 @@ _nouveau_falcon_fini(struct nouveau_object *object, bool suspend) return nouveau_engine_fini(&falcon->base, suspend); }
+void +nouveau_falcon_intr(struct nouveau_subdev *subdev) +{ + struct nouveau_falcon *falcon = (void*)subdev; + u32 intr = nv_ro32(falcon, 0x008); + + nv_wo32(falcon, 0x004, intr); + + if (intr & 0x10) { + intr &= ~0x10; + + nv_info(falcon, "Exit interrupt called\n"); + } + + if (intr) + nv_error(falcon, "Unhandled interrupt %08x\n", intr); +} + int nouveau_falcon_create_(struct nouveau_object *parent, struct nouveau_object *engine, diff --git a/drivers/gpu/drm/nouveau/core/engine/bsp/nvc0.c b/drivers/gpu/drm/nouveau/core/engine/bsp/nvc0.c index 0a5aa6b..2201c96 100644 --- a/drivers/gpu/drm/nouveau/core/engine/bsp/nvc0.c +++ b/drivers/gpu/drm/nouveau/core/engine/bsp/nvc0.c @@ -91,6 +91,7 @@ nvc0_bsp_ctor(struct nouveau_object *parent, struct nouveau_object *engine, return ret;
nv_subdev(priv)->unit = 0x00008000; + nv_subdev(priv)->intr = nouveau_falcon_intr; nv_engine(priv)->cclass = &nvc0_bsp_cclass; nv_engine(priv)->sclass = nvc0_bsp_sclass; return 0; diff --git a/drivers/gpu/drm/nouveau/core/engine/bsp/nve0.c b/drivers/gpu/drm/nouveau/core/engine/bsp/nve0.c index d4f23bb..4e7f79b 100644 --- a/drivers/gpu/drm/nouveau/core/engine/bsp/nve0.c +++ b/drivers/gpu/drm/nouveau/core/engine/bsp/nve0.c @@ -91,6 +91,7 @@ nve0_bsp_ctor(struct nouveau_object *parent, struct nouveau_object *engine, return ret;
nv_subdev(priv)->unit = 0x00008000; + nv_subdev(priv)->intr = nouveau_falcon_intr; nv_engine(priv)->cclass = &nve0_bsp_cclass; nv_engine(priv)->sclass = nve0_bsp_sclass; return 0; diff --git a/drivers/gpu/drm/nouveau/core/engine/ppp/nvc0.c b/drivers/gpu/drm/nouveau/core/engine/ppp/nvc0.c index ebf0d86..4557c3b 100644 --- a/drivers/gpu/drm/nouveau/core/engine/ppp/nvc0.c +++ b/drivers/gpu/drm/nouveau/core/engine/ppp/nvc0.c @@ -91,6 +91,7 @@ nvc0_ppp_ctor(struct nouveau_object *parent, struct nouveau_object *engine, return ret;
nv_subdev(priv)->unit = 0x00000002; + nv_subdev(priv)->intr = nouveau_falcon_intr; nv_engine(priv)->cclass = &nvc0_ppp_cclass; nv_engine(priv)->sclass = nvc0_ppp_sclass; return 0; diff --git a/drivers/gpu/drm/nouveau/core/engine/vp/nvc0.c b/drivers/gpu/drm/nouveau/core/engine/vp/nvc0.c index f761949..cc2c8cc 100644 --- a/drivers/gpu/drm/nouveau/core/engine/vp/nvc0.c +++ b/drivers/gpu/drm/nouveau/core/engine/vp/nvc0.c @@ -91,6 +91,7 @@ nvc0_vp_ctor(struct nouveau_object *parent, struct nouveau_object *engine, return ret;
nv_subdev(priv)->unit = 0x00020000; + nv_subdev(priv)->intr = nouveau_falcon_intr; nv_engine(priv)->cclass = &nvc0_vp_cclass; nv_engine(priv)->sclass = nvc0_vp_sclass; return 0; diff --git a/drivers/gpu/drm/nouveau/core/engine/vp/nve0.c b/drivers/gpu/drm/nouveau/core/engine/vp/nve0.c index 2384ce5..774ec16 100644 --- a/drivers/gpu/drm/nouveau/core/engine/vp/nve0.c +++ b/drivers/gpu/drm/nouveau/core/engine/vp/nve0.c @@ -91,6 +91,7 @@ nve0_vp_ctor(struct nouveau_object *parent, struct nouveau_object *engine, return ret;
nv_subdev(priv)->unit = 0x00020000; + nv_subdev(priv)->intr = nouveau_falcon_intr; nv_engine(priv)->cclass = &nve0_vp_cclass; nv_engine(priv)->sclass = nve0_vp_sclass; return 0; diff --git a/drivers/gpu/drm/nouveau/core/include/core/falcon.h b/drivers/gpu/drm/nouveau/core/include/core/falcon.h index 1edec38..181aa7d 100644 --- a/drivers/gpu/drm/nouveau/core/include/core/falcon.h +++ b/drivers/gpu/drm/nouveau/core/include/core/falcon.h @@ -72,6 +72,8 @@ int nouveau_falcon_create_(struct nouveau_object *, struct nouveau_object *, struct nouveau_oclass *, u32, bool, const char *, const char *, int, void **);
+void nouveau_falcon_intr(struct nouveau_subdev *subdev); + #define _nouveau_falcon_dtor _nouveau_engine_dtor int _nouveau_falcon_init(struct nouveau_object *); int _nouveau_falcon_fini(struct nouveau_object *, bool);